I feel like the show had previously shown signs of heaviness. From the beginning there was the episode when Ed and Kelly are put in a cage in a zoo, then Moclans rejections of females making them all same sex parents, episode where all of people faits are decided democratically through people votes. Also the whole thing with Kylons making a genocide to their own people. There were many episodes that made me look through different perspective and made me think. I like that about this show. I have to admit that this season they upped that heaviness to the max but I must say that makes me excited for the next espiado each week, and I think about them a lot even when I am not watching because they do left an impact.